Hot answers tagged remote-sensing
I've finally found a tool that does this. This task is referred to as mono-photogrammetry or monoplotting and involves referencing a single oblique and unrectified photo to a DEM to produce georeferenced data for use in a GIS. This is similar to photogrammetry, except you only have a single image. The WSL Monoplotting-Tool is specifically designed for this ...
This may be easier using the Orfeo toolbox (https://www.orfeo-toolbox.org/), this is provided with OSgeo4W and can be accessed usign QGIS or a command line interface. This tutorial uses mean shift segmentaion to generate objects, which can be the classified using SVM/random forests etc. ...
I don't think so. Landsat 8 range values are from 0 to 65536 (8 bits: 28 = 256; 16 bits: 216 = 65536) But usually values are between 4-5K and 21-23K.
Yes, the difference is correct. The reason for the difference between the two is the increased bit-depth of Landsat 8 (16 bit), when compared to Landsat 7 (8 bit). By calibrating the data to top-of-atmosphere reflectance the difference between the images should be minimal.
The usual library is ASTER. For application of that, and background, I suggest Baldridge, A. M., S.J. Hook, C.I. Grove and G. Rivera, 2009.. The ASTER Spectral Library Version 2.0. Remote Sensing of Environment, vol 113, pp. 711-715. For water, do you want liquid or frozen water? Sea water or fresh? Distilled or tap? In any case, start at ...
Only top voted, non community-wiki answers of a minimum length are eligible